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Finding the Fourth Proportional to 386,473.61, 579,750.18 and 133,753.65

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Solution

The fourth proportional to 386,473.61, 579,750.18 and 133,753.65 is: 200,644.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,473.61 : 579,750.18 = 133,753.65 : x
  2. Step 2: Convert to fraction form
    386,473.61/579,750.18 = 133,753.65/x
  3. Step 3: Cross multiply
    386,473.61x = 579,750.18 × 133,753.65
  4. Step 4: Simplify right side
    386,473.61x = 77,543,703,945.34
  5. Step 5: Solve for x
    x = 77,543,703,945.34/386,473.61
  6. Step 6: Final answer
    x = 200,644.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.